W7 INFO
That W7 looks a lot like mine. Mine have seats and 3/8 guides, which I plan on replacing with 11/32 or 5/16. I bought some 3/8 valves I think 2.15 at Indy, but on a quick mock up they were too short. Got them for $50, so no real loss. Unless a deal comes along, I plan on using my Iron W2 rockers.